An imaging system includes a rotating gantry with a bore, and an X-ray radiation source supported by the rotating gantry, which rotates around the bore and emit X-ray radiation that traverses at least a portion of the bore. A detector array supported by the rotating gantry, located opposite the X-ray radiation source, detects the X-ray radiation having traversed an object located within the bore and generate projection data indicative of the detected X-ray radiation, wherein the projection data comprises a sinogram. A processor estimates a portion of the object truncated in the sinogram by fitting a curve to data sampled from a plurality of views of the object in the sinogram adjacent to a set of truncated views of the object in the sinogram, and reconstructs an image of the object based on the estimated portion of the object truncated and the generated projection data.